What's in the box
- 1 × MRCOOL® Smart Wi-Fi Mini Stat
- Wall Mount Backplate
- Table Stand
- Product Documentation
The MRCOOL® Smart Wi-Fi Mini Stat is designed as a smart control accessory for compatible mini-split systems.
It can be placed on a table with the included stand, wall-mounted with the adapter, or hardwired for a cleaner wall-mounted setup.
Follow the included product documentation for setup, pairing, app connection, and compatibility requirements.
Compatibility should be confirmed before purchase to ensure the Mini Stat works with your specific mini-split model.
• Base Warranty: 1-Year Warranty
Please refer to the product warranty documentation for full warranty terms, registration requirements, and coverage details
Free shipping available.
Orders ship from U.S. warehouse locations. Delivery times may vary by product availability, destination, and carrier scheduling.
Returns must follow Cool Heat Direct’s return policy and the product must meet return eligibility requirements.
Manuals & documents
MODEL: MST05
Smarter Mini-Split Control from Anywhere.
Want easier control over your MRCOOL® mini-split without constantly using the standard remote?
The MRCOOL® Smart Wi-Fi Mini Stat gives you a modern, thermostat-style way to manage comfort from the wall, a tabletop stand, your smartphone, or voice control.
Designed for compatible mini-split systems, this compact smart control helps you adjust heating and cooling, create 7-day schedules, track usage history, and manage comfort remotely through the Smart HVAC app.
With support for Alexa, Google, Siri, and MRCOOL® Link, it gives homeowners flexible control from almost anywhere.
The Comfy Max feature helps prevent overheating and overcooling by using smart comfort thresholds to maintain a more balanced indoor temperature.
It can be wall-mounted, hardwired, or placed on a table with the included stand, making it a simple upgrade for smarter everyday comfort.
Smart control. Better comfort. Built for modern mini-split living.
Why You’ll Love It
✅ Smart Wi-Fi control for compatible mini-splits
✅ Works with the Smart HVAC app
✅ Compatible with Alexa, Google, Siri, and MRCOOL® Link
✅ Comfy Max helps prevent overheating and overcooling
✅ Smart 7-day scheduling
✅ Usage history tracking
✅ Remote access from anywhere
✅ Multiple placement options
✅ DIY-friendly installation
✅ 1-Year Warranty
Best For
MRCOOL® Mini-Splits • Smart Comfort Control • Bedrooms • Living Areas • Home Offices • Remote System Control • Voice Control Users • Smart HVAC Upgrades
| Specification | Details |
|---|---|
| Product Type | Smart Wi-Fi Mini Stat |
| Model | MST05 |
| Series | Smart Wi-Fi Mini Stat |
| Compatible System Type | Compatible Mini-Splits |
| Voltage | 24V |
| Color | White |
| WiFi Compatibility | Yes |
| App Compatibility | Yes |
| Works with iOS | Yes |
| Works with Android | Yes |
| Voice Control | Alexa / Google / Siri / MRCOOL® Link |
| Smart Scheduling | 7-Day Schedules |
| Usage History | Yes |
| Remote Access | Yes |
| Comfy Max | Yes |
| Installation Options | Table Stand / Wall Mount / Hardwired Wall Mount |
| Base Warranty | 1 Year |
| Net Dimensions | 3.9" W × 3.9" H × 1" D |
| Net Weight | 0.4 lb |
| Gross Dimensions | 6.1" W × 7.1" H × 1.8" D |
| Gross Weight | 1.1 lb |
Questions, answered
Everything homeowners ask before buying a MRCOOL® system.
Installation
Do I need an HVAC technician to install this?
No. MRCOOL® DIY systems are designed for homeowner installation. The pre-charged Quick Connect® line set means there's no refrigerant handling, no vacuum pump, and no special tools or license required.
How long does installation take?
Most single-zone systems go in within a few hours: mount the indoor air handler, set the outdoor condenser, connect the pre-charged line set, and power it on.
Do I need an electrician?
The system needs a dedicated circuit. Most homeowners have a licensed electrician add the breaker and disconnect — everything else you can do yourself.
Sizing & compatibility
What BTU size do I need?
As a rule of thumb: up to 400 sq ft → 9–12K BTU, 400–600 sq ft → 12–18K, 600–1,000 sq ft → 18–24K. Use the room-size guide above and factor in insulation, ceiling height and sun exposure.
Will it heat in winter?
Yes — these are heat pumps, so they heat and cool. Many MRCOOL® systems keep heating in sub-freezing temperatures; check each model's spec sheet for its low-temperature heating range.
115V or 230V — which do I need?
9K–12K units are usually 115V (standard outlet circuit); 18K and larger are typically 230V. The voltage is shown in the product options and specifications.
Warranty & support
What warranty is included?
MRCOOL® systems carry manufacturer warranty coverage — typically 5–10 years on major components when you register your system after installation.
How do I get help choosing or installing?
Email support@coolheatdirect.com — our U.S. team replies within one business day with sizing, voltage and compatibility help.
Shipping & returns
How fast does it ship?
Most products ship in 3–5 business days with free curbside delivery in the continental U.S. The freight carrier calls to schedule your delivery.
Can I return it?
Returns are accepted within 30 days on new, unopened items in original packaging. A restocking fee may apply to HVAC equipment — we always confirm before issuing a return authorization.
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